team employed to arrest dzhokhar tsarnaev. even in the tense final moments as team members slowly approached the boat, they did not know if tsarnaev would pull a weapon out or maybe an explosive device. they described their precise movements to anderson cooper. listen. >> we got close enough that at one point where both of his hands were up because of the rocking back and forth, both of his hands were up, we could see that there were no weapons in them, no ignition devices we broke away from the shield protective cover. and we just rushed him. put hands on him, grabbed him and pulled him off the boat down onto the grounds. >> the reason the s.w.a.t. team immediately pulled off his shirt, of course, was to check if he was wearing some kind of explosive device, perhaps, even a suicide vest. here's what we can expect today here in boston. boylston street right behind me will open to residents and business owners. this evening the congress investigates the fbi examining of tamerlan. investigators will look into how the tsarnaev br